Hi, bmcamper. You can try to refer these links: https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings https://www.addictivetips.com/windows-tips/back-up-and-restore-a-firefox-profile-on-windows-10/ https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible Hope it's helps you to solve your problem.